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Humic acid transport in saturated porous media: Influence of flow velocity and influent concentration
Wei, Xiaorong1; Shao, Mingan1,2; Du, Lina1; Horton, Robert3
2014-12-01
Source PublicationJOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
Volume26Issue:12Pages:2554-2561
AbstractUnderstanding the transport of humic acids (HAs) in porous media can provide important and practical evidence needed for accurate prediction of organic/inorganic contaminant transport in different environmental media and interfaces. A series of column transport experiments was conducted to evaluate the transport of HA in different porous media at different flow velocities and influent HA concentrations. Low flow velocity and influent concentration were found to favor the adsorption and deposition of HA onto sand grains packed into columns and to give higher equilibrium distribution coefficients and deposition rate coefficients, which resulted in an increased fraction of HA being retained in columns. Consequently, retardation factors were increased and the transport of HA through the columns was delayed. These results suggest that the transport of HA in porous media is primarily controlled by the attachment of HA to the solid matrix. Accordingly, this attachment should be considered in studies of HA behavior in porous media. (c) 2014 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.
SubtypeArticle
KeywordAttachment Flow Velocity Humic Acid Initial Concentration Porous Media Transport
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
WOS Subject ExtendedEnvironmental Sciences & Ecology
WOS KeywordDISSOLVED ORGANIC-MATTER ; COLLOID DEPOSITION ; COLUMN EXPERIMENTS ; SOIL COLUMNS ; SUBSTANCES ; ADSORPTION ; RETENTION ; SORPTION ; REMOVAL ; WATER
Indexed BySCI
Language英语
WOS SubjectEnvironmental Sciences
WOS IDWOS:000347664100021
PublisherSCIENCE PRESS
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Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/68446
Collection中国科学院地理科学与资源研究所
Corresponding AuthorWei, Xiaorong
Affiliation1.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China
2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
3.Iowa State Univ, Dept Agron, Ames, IA 50011 USA
Recommended Citation
GB/T 7714
Wei, Xiaorong,Shao, Mingan,Du, Lina,et al. Humic acid transport in saturated porous media: Influence of flow velocity and influent concentration[J]. JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,2014,26(12):2554-2561.
APA Wei, Xiaorong,Shao, Mingan,Du, Lina,&Horton, Robert.(2014).Humic acid transport in saturated porous media: Influence of flow velocity and influent concentration.JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,26(12),2554-2561.
MLA Wei, Xiaorong,et al."Humic acid transport in saturated porous media: Influence of flow velocity and influent concentration".JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA 26.12(2014):2554-2561.
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